Hope founded upon a human being, a man-made philosophy or any institution is always misplaced... because these things are unreliable and fleeting.
Even if we mortgage the next 100 years of generations of human beings, we would not have enough energy to build a Death Star.
All the great writers root their characters in true human behaviour.
I do believe as human beings we are a great mass of contradictions.
No human being in history was all good or all bad, or all black or all white.
If ergonomists have their way, future products won't be built for some hypothetical average person but will conform to the biomechanical needs of whatever particular human body happens to come into contact with them.
Whatever debases the intelligence degrades the entire human being.
Human knowledge is dark and uncertain; philosophy is dark, astrology is dark, and geometry is dark.
The main thing in life is not to be afraid of being human.
Cats and monkeys; monkeys and cats; all human life is there.
Biography - a system in which the contradictions of a human life are unified.
I think every human being has a level of melancholy in life and in general.
I'd love to think that I'm a super human being, but I'm not.
Exploration is really the essence of the human spirit.
Every human being makes mistakes.
The human brain is an incredible pattern-matching machine.
History is a record of human nature in action.
...the rarest of all human qualities is consistency.
Wilderness is not a luxury but a necessity of the human spirit.
Nature pulls one way and human nature another.
Friendship is the greatest element in human life.