The centre of gravity of any parallelogram lies on the straight line joining the middle points of opposite sides.

Mathematics reveals its secrets only to those who approach it with pure love, for its own beauty.

Man has always learned from the past. After all, you can't learn history in reverse!

Give me a place to stand, and a lever long enough, and I will move the world.

Give me but a firm spot on which to stand, and I shall move the earth.

Those who claim to discover everything but produce no proofs of the same may be confuted as having actually pretended to discover the impossible.

Rise above oneself and grasp the world.

There are things which seem incredible to most men who have not studied Mathematics.

Equal weights at equal distances are in equilibrium and equal weights at unequal distances are not in equilibrium but incline towards the weight which is at the greater distance.

Eureka! (I have found it!).

Any solid lighter than a fluid will, if placed in the fluid, be so far immersed that the weight of the solid will be equal to the weight of the fluid displaced. On floating bodies I, prop 5.

Science explains the how.Philosophy explains the why.Free-thinkers need both.

Would that life were like the shadow cast by a wall or a tree but it is like the shadow of a bird in flight.

What you learn is more important than what you earn.

The Universe is responding to who you FEEL you are.

We all need someone who understands.

Remain dignified, dress well, be good to other people and you’ll be fine.

My published works are concrete evidence that I exist.

I don’t think there’s enough of her left.

The necessity of the times, more than ever, calls for our utmost circumspection, deliberation, fortitude, and perseverance.