History is the devil's scripture.
Any place I hang my head is home.
Sometimes you have to be apart from people you love, but that doesn't make you love them any less. Sometimes you love them more.
Crude classifications and false generalizations are the curse of organized life.
Even truth needs to be clad in new garments if it is to appeal to a new age.
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.
We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths.
We must all obey the great law of change. It is the most powerful law of nature.
Life is full of misery, loneliness, and suffering - and it's all over much too soon.
Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry, their passions a quotation.
We're born alone, we live alone, we die alone. Only through our love and friendship can we create the illusion for the moment that we're not alone.
To live is the rarest thing in the world. Most people exist, that is all.
Every person who ever thought he had a right to assert, and went boldly and asserted it, himself, or jointly with others that shared his convictions, was a direct actionist.
He who has a why to live can bear with almost any how.
When someone leaves, it's because someone else is about to arrive.
Old age is by nature rather talkative.
The 'good old times'-all times, when old, are good.
Life would be tragic if it weren't funny.
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.
How wonderful it is that nobody need wait a single moment before starting to improve the world.
Science is the outcome of being prepared to live without certainty and therefore a mark of maturity. It embraces doubt and loose ends.