Those who have never known the deep intimacy and the intense... - Bertrand Russell

"To like many people spontaneously and without effort is perhaps the greatest of all sources of personal happiness."

"Those who have never known the deep intimacy and the intense companionship of mutual love have missed the best thing that life has to give."

"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."

"To fear love is to fear life, and those who fear life are already 3-parts dead."

"It is not what the man of science believes that distinguishes him, but how and why he believes it. His beliefs are tentative, not dogmatic; they are based on evidence, not on authority or intuition."