All Of Science Can Be Divided Into

When You Can Measure What You Are Speaking About, And Express It In Numbers, You Know Something About It.

Nothing Can Be More Fatal To Progress Than A Too Confident Reliance On Mathematical Symbols; For The Student Is Only Too Apt To Take The Easier Course, And Consider The Formula Not The Fact As The Physical Reality.

Mathematics Is The Only True Metaphysics.

I Have Not The Smallest Molecule Of Faith In Aerial Navigation Other Than Ballooning, Or Of The Expectation Of Good Results From Any Of The Trials We Heard Of. So You Will Understand That I Would Not Care To Be A Member Of The Aeronautical Society.

Heavier-than-air Flying Machines Are Impossible.