Try to learn something about everything and everything about something.
Science is nothing but trained and organized common sense, differing from the latter only as a veteran may differ from a raw recruit: and its methods differ from those of common sense only as far as the guardsman's cut and thrust differ from the manner in which a savage wields his club.
The deepest definition of youth is life as yet untouched by tragedy.
Ours is essentially a tragic age, so we refuse to take it tragically. The cataclysm has happened, we are among the ruins, we start to build up new little habitats, to have new little hopes. It is rather hard work: there is now no smooth road into the future. But we go round, or scramble over the obstacles. We've got to live, no matter how many skies have fallen.
That's the tragedy of falling in love; it brings with it the potential for loss.
When, at some point in our lives, we meet a real tragedy — which could happen to any one of us — we can react in two ways. Obviously, we can lose hope, let ourselves slip into discouragement, into alcohol, drugs, and unending sadness. Or else we can wake ourselves up, discover in ourselves an energy that was hidden there, and act with more clarity, more force.
And this is the simple truth — that to live is to feel oneself lost. He who accepts it has already begun to find himself, to be on firm ground. Instinctively, as do the shipwrecked, he will look around for something to which to cling, and that tragic, ruthless glance, absolutely sincere, because it is a question of his salvation, will cause him to bring order into the chaos of his life. These are the only genuine ideas; the ideas of the shipwrecked. All the rest is rhetoric, posturing, farce.