To recognize the quality, significance, or magnitude of: appreciated their freedom. To be fully aware of or sensitive to; realize: I appreciate your problems. To be thankful or show gratitude for: I really appreciate your help. To esteem or value highly. To raise in value or price, especially over time.
Mid-15th century, "good will," from Middle French gratitude, Medieval Latin gratitudinem "thankfulness," Classical Latin gratus "thankful, pleasing, agreeable" (see grace).
Old English glæd "bright, shining, joyous," from Proto-Germanic glada (Old Norse glaðr "smooth, bright, glad," Danish glad "glad, joyful," Old Saxon gladmod "glad," Old Frisian gled "smooth," Dutch glad "slippery," German glatt "smooth"), from Proto-Indo-European ghel "to shine" (see glass). The modern sense is much weakened.
"Emptiness is without characteristics. Illumination has no emotional afflictions. With piercing, quietly profound radiance, it mysteriously eliminates all disgrace. Thus one can know oneself; thus the self is completed. We all have the clear, wondrously bright field from the beginning. Many lifetimes of misunderstanding come only from distrust, hindrance, and screens of confusion that we create in a scenario of isolation. With boundless wisdom journey beyond this, forgetting accomplishments. Straightforwardly abandon stratagems and take on responsibility. Having turned yourself around, accepting your situation, if you set foot on the path, spiritual energy will marvelously transport you. Contact phenomena with total sincerity, not a single atom of dust outside yourself."
~ Hung-chih Cheng-Chueh (Hongzhi Zhengjue) (1091-1157)