Berachot 54a — On seeing shooting stars, earthquakes, thunderclaps, winds, and lightenings, one should say, \'Blessed be G-d whose strength and might fill the world\'.  On seeing mountains, hills, seas, rivers, and deserts, one should say, \'Blessed be G-d who wrought the work of creation\'.

Blessing on the First Blossoming Fruit Tree Seen in Spring — Blessed are you, our G-d who left nothing out of this world, and created in it good creatures and good trees, so humankind could benefit from them.

Ecclesiastes 1:4 — One generation passes away, and another generation comes; but the earth abides forever.

Isaiah 52:7 — How beautiful upon the mountains are the feet of the messenger and good tidings.

Job 37:14 — Stand still and consider the wondrous works of G-d.

Kodashim 32a — Whoever destroys anything that could be useful to another person breaks the law of bal tashchit (destroying needlessly).

Kodashim 4:12 — It is forbidden to live in a town where there is no garden or greenery.

Kohelet Rabbah 7:13 — Behold My works, how splendid they are.  All that I have created I created for your sake.  Take care that you do not become corrupt and thus destroy My world.  For once you become corrupt, there is no one after you to repair it.

Maimonides, Guide for the Perplexed, 3:25 — In the whole realm of nature, there is nothing purposeless, trivial or unnecessary.

Midrash Sifre to Deuteronomy 20:19 — If not for the trees, human life could not exist.

Numbers 14:37-38 — The men who had given a bad report about the land thus died before G-d in the plague.  Among the men who went to explore the land, only Joshua and Caleb remained alive.

Proverbs 22:28 — Remove not the ancient landmark, which thy fathers have set.

Proverbs 25:25 — As cold water to a thirsty soul, so is good news from a far away country.

Proverbs 3:27 — Do not withhold good from those to whom it is due.

Proverbs 4:8 — Hug wisdom and she will exalt you.

Rabbi Samson Raphael Hirsch — \"Do not destroy anything\" is the first and most general call of G-d.

Sefer Ma’alot Hamiddot — True contentment is found only among those saintly souls who are satisfied with little, just as most people are content only with a lot.

Shabbat 133b — As G-d is gracious and compassionate, so I should be gracious and compassionate.

Shabbat 133b — Just as He (G-d) is gracious, so shall you be gracious.  Just as He is merciful, so shall you be merciful.