That which can be asserted without evidence, can be dismissed without evidence.
Space is big. You just won’t believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist’s, but that’s just peanuts to space.
The test of a first rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
You can buy my time and effort, but you have to earn my dedication.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
All real philosophers have been artists in the realm of concepts.
I don’t believe in taking right decisions. Take decisions and make them right.
Maybe true travel is not the transportation of the body, but a change of perception, renewing the mind.
Anything that gives us new knowledge gives us an opportunity to be more rational.