1,131 Quotes by Carl Sagan

The illegality of cannabis is outrageous, an impediment to full utilization of a drug which helps produce the serenity and insight, sensitivity and fellowship, so desperately needed in this increasingly mad and dangerous world.

It is the tension between creativity and skepticism that has produced the stunning and unexpected findings of science.

Even these stars, which seem so numerous, are as sand, as dust or less than dust in the enormity of the space in which there is nothing.

A galaxy is composed of gas and dust and stars billions upon billions of stars. Every star may be a sun to someone.

It is of interest to note that while some dolphins are reported to have learned English — up to 50 words used in correct context — no human being has been reported to have learned dolphinese.

Extraordinary claims demand extraordinary evidence.

It is tension between creativity and skepticism that has produced the stunning and unexpected findings of science.

The chemistry of coal is still not fully understood, despite a long standing economic incentive

The beach reminds us of space. Fine sand grains, all more or less uniform in size, have been produced from the larger rocks through ages of jostling and rubbing, abrasion and erosion, again driven through waves and weather by distinct moon and Sun.