Bertrand Russell

"Pleasure is one of the few reliable indicators of truth."

"Sorrow is better than fear, because sorrow is brought by real evil, while fear may be occasioned by nothing real."

"Machines have given us a false sense of omnipotence, when in reality we are increasingly at their mercy."

"The capacity for human feeling is infinite; the capacity for human understanding is not."

"Love is wise; hatred is foolish."

"Tolerance is not indifference; it is the recognition that diversity is a source of strength."

"I am firmly convinced that most of mankind's greatest disasters come from misunderstanding."

"The wise man doesn't believe in luck; he believes in cause and effect."

"Silence is sometimes the greatest form of eloquence."

"A man without conviction is like a ship without a rudder; both are likely to drift in dangerous waters."

"The pursuit of pleasure is not evil; the pursuit of it at the expense of virtue is."

"Ideals are important, but so is the realistic assessment of the means available to achieve them."

"The feeling of ennui is the highest form of criticism."

"Time may change everything, but it cannot change truth."

"Beauty is the only thing worth living for, but it is not enough to sustain us when we live only for it."

"Courtesy is a responsibility of the strong toward the weak."

"The ultimate goal of philosophy is not to understand the world, but to change it."

"A man of action, faced with a problem, may advance toward his objective with confidence; a philosopher would wait for more information."

"We tell ourselves that we are seeking truth, but what we are often really seeking is comfort."

"The worst sin toward our fellow creatures is not to hate them, but to be indifferent to them."

"Happiness is not the absence of problems, but the ability to manage them wisely."

"Civilization requires us to deny many of our natural impulses; whether this is worth the cost is a reasonable question."

"The greatest of human blessings, according to the ancient world, is to be well-spoken of after one's death."

"A little learning is not a dangerous thing if we know it is a little."