quote by Leonhard Euler

After exponential quantities the circular functions, sine and cosine, should be considered because they arise when imaginary quantities are involved in the exponential.

— Leonhard Euler

Sensitive Sine quotations

Conflict is the gadfly of thought. It stirs us to observation and memory. It instigates invention. It shocks us out of sheep-like passivity, and sets us at noting and contriving…conflict is a sine qua non of reflection and ingenuity.

We are charmed by neatness: Let not your hair be out of order.

[Lat., Munditiis capimur: non sine lege capilli.]

For me, politeness is a sine qua non of civilization.

Soul-serving requires a heart that beats hard against the ribs.

It requires a soul full of the milk of human kindness. This is the sine qua non of success.

I no longer drink nearly as much as I used to but, still, my motto is Sine coffea nihil sum. Without coffee, I'm nothing.

I think the entire message of the psychedelic experience, which is basically the sine qua non of the rebirth of alchemical understanding, the very basis of that understanding is that nature seeks to communicate.

Self-realization and self-fulfilment are the sine qua non for human existence.

The law no passion can disturb. 'Tis void of desire and fear, lust and anger. 'Tis mens sine affectu, written reason, retaining some measure of the divine perfection. It does not enjoin that which pleases a weak, frail man, but, without any regard to persons, commands that which is good and punishes evil in all, whether rich or poor, high or low.

Our advantages fly away without aid. Pluck the flower. [Lat., Nostra sine auxilio fugiunt bona. Carpite florem.]

There has not been any great talent without an element of madness.

-Nullum magnum ingenium sine mixtura dementiae fuit

A sense of belonging is a sine qua non of healthy psychological functioning everywhere. Such a sense, beginning in infancy and continuing throughout life, comes about by experiencing mutual empathy; by sensing oneself as part of a whole, which recognizes and accepts that one is a member.

Fidelity to the subject's thought and to his characteristic way of expressing himself is the sine qua non of journalistic quotation.

IQ and technical skills are important, but emotional intelligence is the sine qua non of leadership.

Thou art moist and soft clay; thou must instantly be shaped by the glowing wheel. [Lat., Udum et molle lutum es: nunc, nunc properandus et acri Fingendus sine fine rota.]

Leisure was the sine qua non of the full Renaissance.

The feudal nobility, having lost its martial function, sought diversion all over Europe in cultivated pastimes: sonneteering, the lute, games and acrostics, travel, gentlemanly studies and sports, hunting and hawking, treated as arts.

Fourier's theorem has all the simplicity and yet more power than other familiar explanations in science. Stated simply, any complex pattern, whether in time or space, can be described as a series of overlapping sine waves of multiple frequencies and various amplitudes.

Ownership is a sine qua non of sustainable development.

Nulla dies sine linea - Not a day without a line.

Sound money is the sine qua non of a prosperous society.

I don't feel like music is getting more intense;

I think generally the channel for deeper harmonic saturation is not just a sine wave - but a really crunched sine wave. The trend in music is towards a harmonic saturation. I wouldn't say I'm reacting against that. It's just a personal choice to move into some weird space. This also allows me breathing room in the future. It just felt like the right thing to step back on.

Personal evolution has nothing to do with art, it's never.

Art is a sine curve: dark and light change permanently, in cumulative radicalism. Art decides what to do. The choice of colors is made by the colors themselves. The evolution of art is the evolution of the future itself.

Climate change is the sine qua non of continued civilization.

We either solve this, or it's lights out. Turning into a collective like that is so much more aligned with how humans live and think and change.

The sine qua non for obtaining a psychedelic experience is humbling yourself to the point where you admit that you must submit to the experience of the plant or the drug. This act of surrender is the major technical function you will be called upon to perform during the psychedelic trip.

Liberty is the essential basis, the sine qua non, of morality.

Crucial to how we feel is being aware of how we are feeling in the moment.

The sine qua non of that is to realize that you are being emotional in the first place. The earlier you recognize an emotion, the more choice you will have in dealing with it. In Buddhist terms, it's recognizing the spark before the flame. In Western terms, it's trying to increase the gap between impulse and saying or doing something you might regret later.

The intimate coupling of two men or two women is not marriage.

It is a pale and misshapen counterfeit that will only serve to empty marriage of its meaning and destroy the institution that is the keystone in the arch of civilization... Marriage is the sine qua non for healthy children and a stable society. It is 'fundamental to the very existence and survival of the race.'

Marriage is the most obvious public practice about which information is readily available. When combined with the traditional Jewish concern for continuity and self-preservation - itself only intensified by the memory of the Holocaust - marriage becomes the sine qua non of social membership in the modern Orthodox community.

The psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology.

Never to allow a patient to be waked, intentionally or accidentally, is a sine qua non of all good nursing.

The mind is sicker than the sick body;

in contemplation of its sufferings it becomes hopeless. [Lat., Corpore sed mens est aegro magis aegra; malique In circumspectu stat sine fine sui.]

May you live unenvied, and pass many pleasant years unknown to fame;

and also have congenial friends. [Lat., Vive sine invidia, mollesque inglorius annos Exige; amicitias et tibi junge pares.]

Without feathers it isn't easy to fly: my wings have got no feathers.

[Lat., Sine pennis volare hau facilest: meae alae pennas non habent.] [Alt., Flying without feathers is not easy; my wings have no feathers.]

I do not like the man who squanders life for fame;

give me the man who living makes a name. [Lat., Nolo virum facili redimit qui sanquine famam; Hunc volo laudari qui sine morte potest.]

Of what use are laws, inoperative through public immortality? [Lat.

, Quid leges sine moribus Vanae proficiunt?]

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