Those who study the stars have God for a teacher.

The mouse is wise, but the cat is wiser.

May I not seem to have lived in vain.

An astronomer must be cosmopolitan, because ignorant statesmen cannot be expected to value their services

Now it is quite clear to me that there are no solid spheres in the heavens, and those that have been devised by the authors to save the appearances, exist only in the imagination.

And when statesman or others worry [the scientist] too much, then he should leave with his possessions.

So mathematical truth prefers simple words since the language of truth is itself simple.

Behold, directly overhead, a certain strange star was suddenly seen . . . Amazed, and as if astonished and stupified, I stood still

When I had satisfied myself that no star of that kind had ever shone before, I was led into such perplexity by the unbelievability of the thing that I began to doubt the faith of my own eyes.

There is something eccentric in the orbit of Mars.

It was not just the Church that resisted the heliocentrism of Copernicus.

I do not know how to teach philosophy without becoming a disturber of the peace.

I am not afraid to walk alone.

I am a living soul dwelling on a planet that is afloat in a universe radiant with life. I feel so small and at the same time so uniquely privileged to partake in that inconceivable mystery.

Genius is one percent inspiration and ninety-nine percent perspiration.

Laugh at love and love will make you cry.

Few people on earth know Peter Drucker and his work better than Bruce Rosenstein. This is a welcome, unique and very personal addition to Drucker's incomparable legacy.

Intentions are the triggers for transformation in the body. If you want to wiggle your toes, you do it through intention.

Mainstream Canadians, what some might call the dominant culture, like to think this racism doesn't happen. It's important to remind people that it does and that we have work to do to end it.

You can find the sacred in the most ordinary of things.

Not everything in this life has a happy ending, but this life is not the end of the story.