He gains everyone's approval who mixes the pleasant with the useful.
— Horace

Reform is not pleasant, but grievous; no person can reform themselves without suffering and hard work, how much less a nation.
— Thomas Carlyle

Life is pleasant. Death is peaceful. It's the transition that's troublesome.
— Isaac Asimov

Doubt is not a pleasant mental state, but certainty is a ridiculous one.
— Voltaire

We all try to escape pain and death, while we seek what is pleasant.
— Albert Einstein