For life in general, there is but one decree: youth is a blunder, manhood a struggle, old age a regret.
Doubt must be no more than vigilance, otherwise it can become dangerous.
When life hands you a lemon, say, 'Oh yeah, I like lemons! What else ya got?
The secret of life is honesty and fair dealing. If you can fake that, you've got it made.
The young people think the old people are fools - but the old people know the young people are fools.
The body is meant to be seen, not all covered up.
Fortune cannot aid those who do nothing.
Life is like a library owned by the author. In it are a few books which he wrote himself, but most of them were written for him.
Do not wait for the last judgment. It comes every day.
One day, in retrospect, the years of struggle will strike you as the most beautiful.
Science is the most reliable guide for civilization, for life, for success in the world. Searching a guide other than the science is meaning carelessness, ignorance and heresy.
Life would be tragic if it weren't funny.
In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.
Three things have been difficult to tame: the oceans, fools, and women. We may soon be able to tame the oceans; fools and women will take a little longer.
The difficulty we have in accepting responsibility for our behaviour lies in the desire to avoid the pain of the consequences of that behaviour
The great mistake is to anticipate the outcome of the engagement; you ought not to be thinking of whether it ends in victory or defeat. Let nature take its course, and your tools will strike at the right moment.
No passion in the world is equal to the passion to alter someone else's draft.
When a woman conceives her true self, a miracle occurs and life around her begins again.
Early in life I had to choose between honest arrogance and hypocritical humility. I chose the former and have seen no reason to change.
A life spent making mistakes is not only more honorable, but more useful than a life spent doing nothing.
I always like to look on the optimistic side of life, but I am realistic enough to know that life is a complex matter.