Reason, observation, and experience; the holy trinity of science.
Robert Green IngersollSource: The Works of Robert G. Ingersoll
reason
A selected quote by Robert Green Ingersoll.
Reason, observation, and experience; the holy trinity of science.
Related
I think, therefore I am.
Difficulties are meant to rouse, not discourage. The human spirit is to grow strong by conflict
Nothing ever becomes real till it is experienced
One should always be in love. That is the reason one should never marry
It is never too late to be wise.
If merely 'feeling good' could decide, drunkenness would be the supremely valid human experience.