Never give up listening to the sounds of birds.

If only the bird with the loveliest song sang, the forest would be a lonely place.

During all these years there existed within me a tendency to follow Nature in her walks.

[Drawing should be] a journey of pleasure. Each step must present to the travellers' view objects that are eminently interesting, varied in their appearances, and attracting to such a degree as to excite in each individual thus happily employed the desire of knowing all respecting all he sees.

The best recommendation I can have is my own talents, and the fruits of my own labors, and what others will not do for me, I will try and do for myself.

A true conservationist is a man who knows that the world is not given by his fathers, but borrowed from his children.

Never give up listening to the sounds of birds.