Samkhya Karika 52

न विना भावैर्लिङ्गं न लिङ्गेन भावनिर्वृत्तिः ।
लिङ्गाख्यो भावाख्यस्तस्माद् द्विविधः प्रवर्तते सर्गः ॥ ५२ ॥

na vinā bhāvairliṅgaṃ na liṅgena bhāvanirvṛttiḥ ।
liṅgākhyo bhāvākhyastasmād dvividhaḥ pravartate sargaḥ ॥ 52 ॥

Na=not; vinā=without; bhāvaiḥ=dispositions; liṅgaṃ=subtle body; na=not; liṅgena bhāvanirvṛttiḥ=expression of the dispositions; liṅgākhyaḥ=known as linga (subtle); bhāvākhyaḥ=known as the subjective; tasmāt=therefore; dvividhaḥ=two-fold; pravartate=proceeds; sargaḥ=creation or evolution

Without the subjective dispositions, there would be no objective evolution (of the tanmatras); and without the objective, there would be no subjective. Thus proceeds the two-fold evolution, known as the objective and the subjective.