In this world there are two tragedies. One is not getting what one wants, and the other is getting it. The last is much the worst. Oscar Wilde
Education is what remains after one has forgotten what one has learned in school. Albert Einstein
Mathematics is the only science where one never knows what one is talking about nor whether what is said is true. Bertrand Russell
A dream grants what one covets when awake. German Proverb
One often gets what one disdains. Vietnamese Proverb
Often the best way of giving oneself what one lacks is to take from oneself what one has. Persian Proverb