Listening well and answering well is one of the greatest perfections that can be obtained in conversation.
— Francois de la Rochefoucauld

An education obtained with money is worse than no education at all
Socrates obtained quote

Truth, like gold, is to be obtained not by its growth, but by washing away from it all that is not gold.
— Leo Tolstoy

Wisdom alone is true ambition's aim, wisdom is the source of virtue and of fame; obtained with labour, for mankind employed, and then, when most you share it, best enjoyed.
— Alfred North Whitehead

Real knowledge, like everything else of value, is not to be obtained easily. It must be worked for, studied for, thought for, and, more that all, must be prayed for.
— obtained quotation by Thomas Arnold