Mountains and deserts, with ...

Mountains and deserts, with their sparse life at the limit of existence, make one restless and disconsolate; one becomes an explorer in an intellectual realm as well as in a physical one.
Mountains and deserts, with their sparse life at the limit of existence, make one restless and disconsolate; one becomes an explorer in an intellectual realm as well as in a physical one.
 George Schaller

More phrases

If one does not know to which port one is sailing, no wind is favorable.
What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.

Quotes from the same author

A large animal needs a large area. If you protect that area, you're also protecting thousands of other plants and animals. You're saving all these species that future generations will want - you're saving the world for your children and your children's children. . . . The destruction of species is final. If you lose a species, you lose the genes, you lose all the potential drugs and potential foods that could be useful to the next generations. The ecosystems will not function as they have.
 George Schaller