MuU 3.1.10
यं यं लोकं मनसा संविभाति विशुद्धसत्त्वः कामयते यांश्च कामान् । तं तं लोकं जयते तांश्च कामां- स्तस्मादात्मज्ञं ह्यर्चयेत् भूतिकामः
yaṃ yaṃ lokaṃ manasā saṃvibhāti viśuddhasattvaḥ kāmayate yāṃśca kāmān | taṃ taṃ lokaṃ jayate tāṃśca kāmāṃ- stasmādātmajñaṃ hyarcayet bhūtikāmaḥ
Sanskrit for this text is pending; the English follows the translator's numbering.
Whatever state a man whose nature is purified imagines, and whatever desires he desires (for himself or for others), that state he conquers and those desires he obtains. Therefore let every man who desires happiness worship the man who knows the Self.
Translated by F. Max Müller