There is nothing more dreadful than the habit of doubt. Doubt separates people. It is a poison that disintegrates friendships and breaks up pleasant relations. It is a thorn that irritates and hurts; it is a sword that kill.

The cause is hidden. The effect is visible to all.

I have become my own version of an optimist. If I can't make it through one door, I'll go through another door – or I'll make a door.

“You can do it if you believe you can!”

By all means, marry. If you get a good wife, you'll become happy; if you get a bad one, you'll become a philosopher.

Nothing is worse and more hurtful than a happiness that comes too late.

We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.