Complete the text with suitable prepositions.

Education should never work (a) - --a person's destiny, but should achieve the full development (b) ---his or her own dispositions. The education of people. today so often lags (c)--- the talents and tendencies which their destinies have implanted in them. We must keep pace (d)--- these powers to such an extent that the human beings (e) ---- our care can win their way through to all that their destinies will allow (f) --- the fullest clarity (g) ---- thought, the most loving deepening (h) ---- their feeling, and the greatest possible energy and ability of will. This can only be done (i)---an art of education and teaching which is based (j) ---- a real real knowledge of people.