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"But the only way of discovering the limits of the possible is to venture a little way past them into the impossible."

"When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong."

"We are just tenants on this world. We have just been given a new lease, and a warning from the landlord."

"The only way of finding the limits of the possible is by going beyond them into the impossible."

"For every expert there is an equal and opposite expert."

"The greatest tragedy in mankind's entire history may be the hijacking of morality by religion."

"Be generous but not extravagant, be frugal but not miserly."

"Tears may be dried up, but the heart - never."

"Between thought and expression lies a lifetime."

"When I hear anyone talk of culture, I reach for my revolver."

"The only limits are those of vision."

"How little you know about the age you live in if you think that honey is sweeter than cash in hand."