One Acharya is superior to ten Brahmanas learned in the Vedas. One Upadhyaya is again superior to ten Acharyas. The father, again, is superior to ten Upadhyayas.
दशैव तु सदाऽऽचार्यः श्रोत्रियानतिरिच्यते॥ दशाचार्यानुपाध्याय उपाध्यायान् पिता दश।