Nothing is more important than to see the sources of invention which are, in my opinion more interesting than the inventions themselves.

Take what you need, do what you should, you will get what you want.

Everything that is possible demands to exist.

Every present state of a simple substance is the natural consequence of its preceding state, in such a way that its present is big with its future.

Every mind has a horizon in respect to its present intellectual capacity but not in respect to its future intellectual capacity.

To love is to be delighted by the happiness of someone, or to experience pleasure upon the happiness of another. I define this as true love.

The greatness of a life can only be estimated by the multitude of its actions. We should not count the years, it is our actions which constitute our life.

Music is a hidden arithmetic exercise of the soul, which does not know that it is counting.

Imaginary numbers are a fine and wonderful refuge of the divine spirit almost an amphibian between being and non-being.

We may say, that not only the soul (the mirror of an indestructible universe) is indestructible, but also the animal itself is, although its mechanism is frequently destroyed in parts.

The present is saturated with the past and pregnant with the future.

A good heart will help you to a bonny face my lad ... and a bad one will turn the bonniest into something worse than ugly.

We should try to bring to any power what we have as women. We will destroy it all if we try to imitate that absolutely unfeeling driving ambition that we have seen coming at us across the desk.

Wonder is the desire for knowledge.

I'm working class, my family was working class, and we have struggled the same way our neighbors here in San Francisco have struggled.

I didn't have the problem of finding myself at 45 on the wrong course - I always wanted to be a film director.

I love children and I love men, but I can't commit to either for the rest of my life.

ALL IMPULSES OF THOUGHT HAVE A TENDENCY TO CLOTHE THEMSELVES IN THEIR PHYSICAL EQUIVALENT.

Everything that we eat today has been improved through some sort of breeding process. Anytime you do this, you introduce not only the genes that you know, but some that are not characterized.

For centuries, Cubas greatest resource has been its people.