It is tact that is golden, not silence.
We never see ourselves as others see us.
The only real mistake is the one from which we learn nothing.
Rational discussion is useful only when there is a significant base of shared assumptions.
To be wronged is nothing unless you continue to remember it.
Each problem that I solved became a rule which served afterwards to solve other problems.
In the practice of tolerance, one's enemy is the best teacher.
Stubborn and ardent clinging to one's opinion is the best proof of stupidity.
Courage is resistance to fear, mastery of fear - not absence of fear.
We may encounter many defeats but we must not be defeated.
Talent is God given. Be humble. Fame is man-given. Be grateful. Conceit is self-given. Be careful.
In moments of great grief, thatís where you look and immerse yourself. You realise you are not immortal, you are not a god, you are part of the natural world and you come to accept that.
Never ruin an apology with an excuse.
If you would take, you must first give, this is the beginning of intelligence.
Man is the only creature who refuses to be what he is.
It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.
When I stand before God at the end of my life, I would hope that I would not have a single bit of talent left, and could say, 'I used everything you gave me'.
What lies behind us and what lies ahead of us are tiny matters compared to what lives within us.
If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem.
Don't compromise yourself. You are all you've got.
Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.